At least 11 people were killed in two attacks in Northern Pakistan on Friday, according to authorities. In the city of Mardan, the attacker threw a hand grenade at the gate of the district court of the city, said senior superintendent of police Shafiullah Khan. Terrorist blew himself up after security personnel prevented him to get into the building, according to Khan. At least 10 people were killed and another 40 injured, according to emergency humanitarian services "Rescue 1122". In the neighboring city of Peshawar, one passerby was killed and three members of the Pakistani security forces were wounded earlier that day in the attack in a Christian area. Pakistani police earlier told CNN that four bystanders were killed and five injured. Four suicide bombers that were equipped with weapons and ammunition, entered the area after the attack early in the morning. Security forces said the shootout and murder of four attackers, according to a statement from the Department of Interdepartmental public relations of the Pakistani military (ISPR). Currently, a search for the terrorists from house to house. The situation is under control, says ISPR. "We have increased security institutions, schools, hospitals, colonies and churches," said superintendent of police. Prime Minister of Pakistan Nawaz Sharif condemned the attacks in a statement released by his office. "These cowardly attacks cannot destroy our unwavering commitment in our war against terrorism," he said.